Answer by YourHope:
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Question: What is the simple subject?
Answer: Librarian!
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Answer: 2) Without the chronometer the world would never have been accurately mapped which would have hindered the development of efficient trade routes.
5) The chronometer is the most historically significant object discussed in McGregor's book because it established the concept of global standard time
What i Know(K),What i Want to learn(W),What i Learned(L)
D is the answer to your question
